EP3485196A1 - Brûleur et appareil de chauffage de véhicule - Google Patents

Brûleur et appareil de chauffage de véhicule

Info

Publication number
EP3485196A1
EP3485196A1 EP17748663.6A EP17748663A EP3485196A1 EP 3485196 A1 EP3485196 A1 EP 3485196A1 EP 17748663 A EP17748663 A EP 17748663A EP 3485196 A1 EP3485196 A1 EP 3485196A1
Authority
EP
European Patent Office
Prior art keywords
burner
region
light
funnel
combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17748663.6A
Other languages
German (de)
English (en)
Other versions
EP3485196B1 (fr
Inventor
Peter Neidenberger
Paul Leinsle
Vitali Dell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Webasto SE
Original Assignee
Webasto SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Webasto SE filed Critical Webasto SE
Priority to PL17748663T priority Critical patent/PL3485196T3/pl
Publication of EP3485196A1 publication Critical patent/EP3485196A1/fr
Application granted granted Critical
Publication of EP3485196B1 publication Critical patent/EP3485196B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
    • B60H1/2212—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners arrangements of burners for heating air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
    • B60H1/2206—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners controlling the operation of burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/40—Mixing tubes; Burner heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/404—Flame tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2281—Air supply, exhaust systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2284—Fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21002—Burners specially adapted for a particular use for use in car heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors

Definitions

  • the invention relates to a burner, in particular for vehicle heating devices, having a flexible diaphragm which separates an inner combustion region from an outer region, wherein a light-sensitive sensor for flame detection is arranged in the outer region and wherein the flexible diaphragm has at least one light aperture which penetrates of light from the inner combustion area into the outer area allows.
  • the invention relates to a vehicle heater.
  • vehicle heaters which serve in particular as auxiliary heaters and / or auxiliary heaters. It is also possible in most cases to retrofit vehicle heaters in motor vehicles. Such heaters are also used in other environments, for example in boats, caravans or other mobile or stationary areas.
  • vehicle heaters which are also used in the combustion in the engine, so in particular diesel fuel or gasoline.
  • This fuel which is available in liquid form in the vehicle, must be converted into the gaseous state of matter for the purpose of combustion. For this one uses above all the principles of atomization and / or evaporation.
  • a nozzle In atomizing burners, a nozzle is provided, by means of which the fuel is first converted into droplet form, in order to then change over into the gaseous state due to the heat energy present in the vehicle heater.
  • the oxidation agent required for the combustion is supplied in the form of a combustion air flow to the combustion region in the vehicle heater.
  • the burner of the vehicle heaters also associated with a device for flame detection. This is a sensor of whatever type that detects the presence of a flame in the burner and transmits a corresponding signal to a control unit of the vehicle heater.
  • control and regulation parameters of the vehicle heater are set, for example, in the sense of a modification of the burner operation after successful ignition of the burner or an intentional or unintentional extinguishment of the flame, in which case in particular an interruption of the fuel supply takes place.
  • FIG. 3 An example of a nozzle burner of the prior art is shown in Figure 2 in partial cutaway view. A detail of this nozzle burner is shown in FIG. 3.
  • the burner 10 ' has an internal combustion region 14' bounded by a funnel-shaped wall 26 '.
  • the inner combustion region 14 ' essentially comprises the actual combustion chamber and the region openly adjacent thereto within the funnel-shaped wall 26', which contributes significantly to mixture formation.
  • the funnel-shaped wall 26 ' is shown partially cut away in this illustration. This provides insight into the inner combustion region 14 '. It can be seen a nozzle 24 ', which fuel is supplied. The fuel exits a nozzle orifice 28 'in operation of the burner 10', and is thus supplied to vaporization and eventual combustion.
  • the inner combustion region 14 ' is further bounded by a flexible diaphragm 12', which is shown cut off here, wherein the flexible diaphragm 12 'has a substantially circular disk-shaped form.
  • the flexible panel 12 On the flexible panel 12 'sits an edge 30' of the funnel-shaped wall 26 '.
  • a flexible diaphragm 12 'in the context of the present technical teaching is a diaphragm which, in particular during assembly of the burner, is mechanically slightly elastic or plastically deformable.
  • the flexibility of the diaphragm allows a tolerance compensation at least within the scope of existing production-related dimensional inaccuracy even over many temperature cycles of the burner, in particular avoiding unwanted gaps in the contact area between the flexible diaphragm 12 'and the funnel-shaped wall 26'.
  • the funnel-shaped wall 26 ' tapers from the aperture 12', and it has on its side facing away from the flexible diaphragm 12 'an opening 32' to allow here the distribution of fuel and combustion air and the formation of a flame in the wider combustion chamber.
  • Fuel is supplied to the nozzle via a line, not shown here, which passes from the nozzle 24 'side facing away from the flexible diaphragm 12' through the flexible aperture 12 '.
  • the combustion air required for combustion is supplied to the inner combustion region 14 'via openings 22'. These are formed in the edge 30 'of the funnel-shaped wall 26' and designed U-shaped. As a result of the seating of the edge 30 'of the funnel-shaped wall 26' on the flexible panel 12 ', the openings 30' are closed. borrowed.
  • the flexibility of the flexible baffle 12 ' ensures a defined size of the opening 30' even in the presence of the usual manufacturing tolerances and avoids unwanted gaps between the flexible baffle 12 'and the funnel-shaped wall even over many temperature cycles of the burner.
  • the flexible diaphragm 12 'itself has a light opening 20', for example, has a diameter of 12 mm.
  • the outer region 16 ' includes the adjacent to the inner combustion region 14' space area where no combustion and no contribution to the mixture formation takes place.
  • This light reaches a photosensitive sensor, for example a photodiode, which is arranged in the outer region 16 'of the burner 10' and which serves for the flame detection.
  • a photosensitive sensor for example a photodiode
  • the light opening 20 ' is covered with a mica disk 34'.
  • FIG. 3 allows a view of the flexible diaphragm 12 'of the nozzle 24' and the funnel-shaped wall 26 'opposite side of the flexible diaphragm 12'.
  • the mica disk 34 'fastened to the flexible panel 12' with the rivets 36 ' can be seen completely, as it covers the light opening 20'.
  • the nozzle burner constructed in this way works reliably.
  • the funnel-shaped wall 26' takes place about arrangement and size of the openings 22 'well adjustable combustion air supply, and the mica disk 34' prevents ingress of false air through the large light aperture of the flexible diaphragm 12 'through from the outer Area 16 'in the inner combustion area 14'.
  • a sensor arranged in the outer region can reliably detect the presence of a flame.
  • the diaphragm 12 ' is flexible, because this tolerances can be compensated.
  • combustion air actually enters only through the openings 22 'and not on other areas of the rim 30' of the funnel-shaped wall 26 '.
  • the invention has for its object to overcome the above-described disadvantages of the burner of the prior art.
  • a maintenance-free burner is desired in which a reliable flame detection can always take place and in which penetration of "false air" into the inner combustion region is precluded.
  • the invention builds on the burner of the generic type in that the light opening is intended to also allow a passage of combustion air from the outer area into the inner combustion area.
  • the mica washer which is mandatory in the burner of the prior art, is completely eliminated.
  • the light opening can be integrated into at least one of the combustion air openings.
  • the light opening is circular or oblong-shaped or sickle-shaped or elliptical.
  • the shaping for the light opening one is relatively free, so that the light opening can be optimally adapted to the fluidic and optical requirements.
  • the shaping of the light opening in no longer be taken into account the size or shape of the available mica discs.
  • At least one further opening is provided in the flexible diaphragm, which allows a passage of combustion air from the outer region into the inner combustion region.
  • a total hole pattern is provided, which allows optimal combustion air supply.
  • the combustion air flows axially from the outer region into the inner combustion region.
  • the light aperture may be an equal member of the hole pattern, in particular as regards size and arrangement, or it may differ from the other openings in this regard.
  • the invention is further developed in a particularly advantageous manner in that the photosensitive sensor is aligned with respect to the at least one light opening.
  • the light opening may be such an opening that does not differ from any other openings in the panel.
  • the photosensitive sensor simply has to be placed behind any opening provided in the bezel.
  • the light sensor thus encounters direct light and stray light.
  • the burner according to the invention is preferably designed in such a way that the flexible orifice enables a passage of fuel from the outer region into the inner combustion region, wherein the fuel can be fed to a nozzle arranged in the inner combustion region, and the inner combustion region is delimited by a funnel-shaped wall that tapers away from the flexible bezel. It can therefore be used in principle with a burner that differs from its outer shape hardly from the burner of the prior art.
  • a funnel-shaped wall can be used, which tapers from the flexible diaphragm, so that little or no changes are made to the funnel-shaped wall.
  • the fuel supply through the flexible diaphragm can be carried out in the same way, as is known from the prior art.
  • the funnel-shaped wall has no openings for passage of combustion air. This represents a slight modification of the funnel-shaped wall in relation to the prior art, but this is to be represented in a simple manner. It is simply omitted the U-shaped recesses on the funnel-shaped wall. Ultimately, this simplifies the entire manufacturing process of the burner. The operation of the burner is manageable, since now no longer exists a mixture of radially and axially entering combustion air. The entire combustion air supply can be adjusted on the basis of the hole pattern in the flexible diaphragm, so that flow conditions are particularly simple conditions with only axial entry of combustion air.
  • FIG. 1 shows a burner according to the invention in a partially cutaway view.
  • FIG. 2 shows a burner of the prior art in partially cutaway
  • FIG. 3 shows a detail of the burner according to the prior art.
  • FIG. 1 shows a burner 10 according to the invention in a partially cutaway view.
  • the burner 10 has a flexible diaphragm 12 and a funnel-shaped wall 26.
  • the funnel-shaped wall is shown partially cut open in order to open the view into the internal combustion region 14 of the burner 10.
  • the flexible panel 12 is shown cut off.
  • the nozzle 24 with the nozzle opening 28.
  • the edge 30 of the funnel-shaped wall 26 sits fully on the flexible panel 12.
  • a flexible diaphragm 12 in the sense of the present technical teaching is a diaphragm which, in particular during assembly of the burner, is mechanically slightly elastic or plastically deformable.
  • the flexibility of the diaphragm allows a tolerance compensation at least within the scope of the existing production-related Schmurgiauigkei- times over many temperature cycles of the burner, in particular avoiding unwanted gaps in the contact area between the flexible diaphragm 12 and the funnel-shaped wall 26.
  • the funnel-shaped wall 26 tapers from the flexible diaphragm 12, starting up to an opening 32, into which the fuel is atomized, with it further adjoining the combustion chamber.
  • the funnel-shaped wall 26 at its edge 30 has no more U-shaped openings, so that no radial combustion air inlet takes place in the inner combustion area 14, unlike the prior art.
  • a hole pattern is provided in the aperture 12, which consists of a plurality of openings 20, 22.
  • the inner combustion region 14 essentially comprises the actual combustion chamber and the open area adjacent within the funnel-shaped wall 26, which contributes significantly to the mixture formation.
  • the outer region 16 comprises the space region adjacent to the inner combustion region 14 in which no combustion and no contribution to mixture formation takes place.
  • Two of the openings 20, 22, namely the openings indicated by the reference numeral 20, take on a special role. Aligned with these light openings 20, a light sensor is arranged in the outer area 16, which has an undisturbed view of the inner combustion area 14. In particular, no mica disk is provided which could blind or become sooty. As a result, the burner 10 according to the invention is maintenance-free.
  • the lack of a rigid mica disk the flexibility of the flexible diaphragm 12 is no longer impaired in any way. Consequently, the flexible diaphragm always closes tightly against the edge 30 of the funnel-shaped wall 26, even with large temperature fluctuations. If the light sensor is not aligned with special openings and / or the light openings do not differ from other openings, the light sensor essentially reacts to stray light.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Combustion (AREA)
  • Gas Burners (AREA)

Abstract

L'invention concerne un brûleur (10), en particulier pour des appareils de chauffage de véhicule. Le brûleur comprend un cache flexible (12), qui sépare une zone de combustion interne (14) d'une zone de combustion externe (16). Un capteur photosensible destiné à la détection d'une flamme est agencé dans la zone extérieure (16) et le cache flexible (12) comprend au moins une ouverture (20) pour la lumière qui permet un passage de lumière de la zone de combustion interne (14) dans la zone externe (16). Selon l'invention, l'ouverture (20) pour la lumière est conçue également pour permettre un passage de l'air de combustion de la zone externe (16) dans la zone de combustion interne (14). L'invention concerne en outre un appareil de chauffage de véhicule.
EP17748663.6A 2016-07-18 2017-07-18 Brûleur et appareil de chauffage de véhicule Active EP3485196B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17748663T PL3485196T3 (pl) 2016-07-18 2017-07-18 Palnik i nagrzewnica pojazdu

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016113222.5A DE102016113222A1 (de) 2016-07-18 2016-07-18 Brenner und Fahrzeugheizgerät
PCT/EP2017/068127 WO2018015385A1 (fr) 2016-07-18 2017-07-18 Brûleur et appareil de chauffage de véhicule

Publications (2)

Publication Number Publication Date
EP3485196A1 true EP3485196A1 (fr) 2019-05-22
EP3485196B1 EP3485196B1 (fr) 2021-02-24

Family

ID=59523074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17748663.6A Active EP3485196B1 (fr) 2016-07-18 2017-07-18 Brûleur et appareil de chauffage de véhicule

Country Status (7)

Country Link
US (1) US11052729B2 (fr)
EP (1) EP3485196B1 (fr)
CN (1) CN109642721B (fr)
DE (1) DE102016113222A1 (fr)
PL (1) PL3485196T3 (fr)
RU (1) RU2706323C1 (fr)
WO (1) WO2018015385A1 (fr)

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Also Published As

Publication number Publication date
RU2706323C1 (ru) 2019-11-15
DE102016113222A1 (de) 2018-01-18
WO2018015385A1 (fr) 2018-01-25
CN109642721A (zh) 2019-04-16
US20190232758A1 (en) 2019-08-01
CN109642721B (zh) 2020-09-25
EP3485196B1 (fr) 2021-02-24
PL3485196T3 (pl) 2021-08-16
US11052729B2 (en) 2021-07-06

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